Fault diagnosis and fault-tolerant control design for neutral time delay system

• Published in: Automatika 2023-07, Vol.64 (3), p.422-430
• Main Authors: Rabeb, Benjemaa, Aicha, Elhsoumi, Mohamed Naceur, Abdelkrim
• Format: Article
• Language: English
• Subjects: Actuators; adaptive observer; Closed loops; Control systems; Control theory; fault additive control; Fault diagnosis; Fault tolerance; Feedback control; Liapunov functions; Linear matrix inequalities; Mathematical analysis; neutral variable time delay; State feedback; Systems stability; Time delay systems; Transmission line; Transmission lines
• ISSN: 0005-1144; 1848-3380
• DOI: 10.1080/00051144.2023.2176855

This paper presents a new approach of fault-tolerant control (FTC) for the transmission line as a neutral variable time-delay system. The main goal of this work guarantees faulty neutral variable time delay system stabilization using the state feedback control design based on Lyapunov function and the Linear Matrix Inequality resolution. The use of the FTC method is to achieve actuator and sensor fault compensation. This method is based on two steps. The first one is the synthesis of a nominal control, which remains to maintain the closed-loop system stability. The second step is based on adding a new control law to the nominal one to compensate the fault effect on system behaviour and maintain the desired performance in the closed loop system. Then, a conception of an adaptive observer is used to detect and estimate the fault. Finally, the developed approach is applied for the transmission line. The given results are presented to prove the effectiveness of this approach.